EXCLUSIVE VIDEO! Usually Troubled Teen Taylor Momsen Is On Her Best Behavior For Madonna!

She may have looked like her usual self, but shockingly enough the teen was acting super-sweet and smiley last night! Watch it here if you don’t believe me!

When Taylor Momsen, the new face of Madonna’s Material Girl collection, came down the pink carpet at the Material Girl celebration in NYC on Sept. 22, I expected to hear the teen cursing and spewing a slew of controversial statements — instead, she put on a smile and was uncharacteristically cheerful while promoting the new collection! Someone must have warned her to be on her best behavior! Dressed head-to-toe in Material Girl, she managed to pull out the shortest get-up in the collection and had her signature dark-rimmed eye makeup in full affect, but her sunny disposition was definitely something different. Watch the star chat it up last night here!